The array is intended only to convey some idea of the variety of
shapes that have appeared, it does not give an adequate impression of
the relative frequencies with which the different shapes have
appeared. In fact, the images most commonly appearing in my total
sample show either a small point, formless blob, or fuzzy ellipse of
light in a night sky, or else a dark, more or less distinct ellipse
(like that shown in D9) against a lighter sky. With very few
exceptions, such as the rocket- or "cigar"-shaped object with
"exhaust trail" (G9), which allegedly was photographed over Peru in
1952, the more well-defined objects appear to be some variant of the
"Saucer" or "domed disk."